Porto Feliz weather in September

In September, Porto Feliz sees average daytime highs of 27°C and overnight lows near 16°C, with 79 mm of rain across 8.3 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Porto Feliz's 5th-clearest and 1st-windiest month. For the whole year in context, see Porto Feliz's year-round climate.

Daytime high
27°
8th warmest
Overnight low
16°
5th coldest
Rainfall
79 mm
8.3 wet days
Daylight
11 h 54 min
7:08 AM – 7:00 PM
Cloud cover
50%
5th clearest
Wind
11 km/h
1st windiest
Solar energy
5.24 kWh/m²
Travel score
6.8
out of 10

Porto Feliz is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Porto Feliz reaches about 27°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12715
22715
32815
42815
52815
62815
72815
82815
92815
102816
112816
122816
132816
142816
152816
162816
172816
182816
192716
202716
212716
222716
232716
242716
252716
262716
272716
282716
292716
302717

Porto Feliz weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°23921.713.33.8
Feb30° / 20°16218.112.84.0
Mar29° / 20°12316.312.24.8
Apr28° / 18°587.711.56.6
May25° / 15°616.510.97.5
Jun24° / 14°47510.68.1
Jul24° / 13°404.410.78.2
Aug26° / 14°364.311.27.9
Sep27° / 16°798.311.96.8
Oct28° / 18°10812.212.55.5
Nov29° / 18°14014.813.15.0
Dec29° / 20°1851913.44.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26931
36832
46733
56634
66535
76436
86337
96139
106139
116040
125941
135941
145842
155842
165743
175644
185644
195545
205446
215347
225248
235149
245050
254951
264852
274753
284654
294654
304555

Chance of precipitation in September

Any precipitation

Porto Feliz gets around 79 mm of rain over 8.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 36% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
118
218
319
419
520
621
721
822
923
1023
1124
1225
1325
1426
1527
1627
1728
1829
1930
2031
2132
2232
2333
2434
2534
2635
2735
2836
2936
3036

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the comfortable band about 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15135140
25134150
35034160
44934171
54834171
64734181
74634191
84434201
94335211
104136221
114036231
123837232
133638242
143538252
153339252
163239263
173140263
183040273
192941274
202741275
212641285
222540286
232440297
242439298
252339309
2622383010
2722373110
2821363211
2920353212
3020353312

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 7:24 AM to 6:54 AM, and sunset from 6:56 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:246:56
211.57:236:56
311.67:226:56
411.67:216:57
511.67:206:57
611.67:196:57
711.77:186:58
811.77:176:58
911.77:166:58
1011.77:156:59
1111.87:146:59
1211.87:136:59
1311.87:126:59
1411.87:117:00
1511.87:097:00
1611.97:087:00
1711.97:077:01
1811.97:067:01
1911.97:057:01
2012.07:047:02
2112.07:037:02
2212.07:027:02
2312.07:017:03
2412.17:007:03
2512.16:597:03
2612.16:587:04
2712.16:577:04
2812.16:567:04
2912.26:557:05
3012.26:547:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.24 kWh/m².

For context, solar energy here swings from a low near 3.52 kWh/m² to a high of 5.99 kWh/m² in November across the year — September's 5.24 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.4Bright
Planning a trip in September

Hazard calendar for Porto Feliz

In seasonPeak

None of Porto Feliz's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Porto Feliz's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Porto Feliz?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
5th-best month of the year
7.1
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Porto Feliz for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Porto Feliz in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Porto Feliz sees daytime highs around 27°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Porto Feliz in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Porto Feliz peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 21UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar11Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Porto Feliz in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Porto Feliz is worst in July — around 38 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (January, 18 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1838 µg/m³Jan 1018 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar22Moderate
Apr26Moderate
May31Moderate
Jun35Poor
Jul38Poor
Aug36Poor
Sep35Poor
Oct25Moderate
Nov18Moderate
Dec18Moderate
Location & terrain

Where is Porto Feliz?

Porto Feliz sits at 23.2°S, 47.5°W, 541 m above sea level, in Brazil. The nearest listed city is Boituva, 17 km away.

Topography around Porto Feliz

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Porto Feliz.

Within 3 km, the terrain around Porto Feliz has only modest variations in elevation — a maximum elevation change of 110 m around an average of 527 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 198 m; within 80 km, large variations in elevation — a maximum elevation change of 845 m.

The land around Porto Feliz is covered by grassland (33%), trees (26%) and artificial surfaces (25%) within 3 km, cropland (42%), grassland (29%) and trees (25%) within 16 km, and trees (39%), grassland (27%) and cropland (27%) within 80 km.

3 km
110 m
16 km
198 m
80 km
845 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Boituva 17 km · Iperó 23 km · Cerquilho 23 km · Tietê 23 km · Itu 24 km · Salto 24 km · Capivari 24 km · Elias Fausto 25 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Porto Feliz (-23.2147°, -47.5239°, elevation 541 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).